1、 Gate valve

Gate valve, also called gate valve, is a widely used valve. Its closing principle is that the gate sealing surface and the seat sealing surface is highly polished, flat and consistent, and fit each other to stop the flow of media, and rely on the top mold, spring or gate mold shape, to enhance the sealing effect. It mainly plays a cut-off role in the pipeline.

2、Globe valve

Stop valve, also called cut-off valve, is the most widely used a valve, it is popular because of the opening and closing process between the sealing surface friction is small, more durable, open the height is not large, easy to manufacture, easy maintenance, not only for low pressure, but also for high pressure.

3、 Butterfly valve

Butterfly valve has the characteristics of lightweight, saving material than other valves, simple structure, open and close quickly, cut off and throttle can be used, fluid resistance is small, labor-saving operation. Butterfly valve, can be made into a large diameter. Where butterfly valves can be used, it is best not to make gate valves, because butterfly valves are more economical than gate valves and have good adjustability. At present, the butterfly valve is widely used in hot water pipeline.

4、 Ball valve

The working principle of the ball valve is to rotate the spool to make the valve open or closed. Ball valve switch light, small size, can be made into a large caliber, reliable sealing, simple structure, easy maintenance, sealing surface and spherical surface is often in a closed state, not easy to be eroded by the media, in various industries are widely used.

5、 Plug valve

Plug valve is to rely on the plug body around the center line of the valve body rotation, in order to open and close the purpose. Its role is to cut off, divide the field and change the direction of media flow. Simple structure, small size, the operation only need to rotate 90 degrees, fluid resistance is also not large. The disadvantage is that the switch is laborious, the sealing surface is easy to wear, high temperature is easy to jam, not suitable for regulating the flow.

6、 Check valve

Check valve is to rely on the force of the fluid itself automatically open and close the valve, its role is to stop the backflow of media. It has many names, such as check valve, check valve, single flow gate, etc.

7、 Pressure reducing valve

Pressure reducing valve is an automatic valve that reduces the pressure of the medium to a certain value, and generally the pressure after the valve is less than 50% of the pressure before the valve. There are many types of pressure reducing valves, mainly piston type and spring film type.

8、Steam trap valve

A trap is also called a vapor stop drain valve, vapor valve, water trap, return box, return door, etc. Its function is to automatically drain the condensate that is continuously generated and not allow steam to come out.